Will only start when i put hand over air in take then will run rough
By placing your hand over the air intake you are making the engine create a vacuum that is drawing fuel into the combustion chambers
this indicates a lack of fuel to the carby or blocked jets in the carby
look for fuel filters , blocked petrol cap , problem needle and seat or give the carby a good overhaul.
Testimonial: "i tried main jets cleaned all inside carb reset air mix screws 2.5 turns fresh petrol it ran after hand over back of carb had it ticking over sweet.realized choke on turn it off wont start at all now nothing"
Ya choke jets blocked in carbs. If not check compression and valve clearance. Regards Jim...
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